Potential risk factors may include defects in the egg, abnormalities within the uterus, or nutritional deficiencies.

These include central nervous system, ocular, and musculoskeletal defects.

Risk factors of infection include antibiotic pressure, foreign device, or underlying immune defects.

Others include mechanical defects and driver fatigue.

The problems included pain, defects or failures, infection and bleeding or blood clots.

Other causes of incomplete evacuation include non-emptying defects like a rectocele.

Pollution-related illnesses included kidney disease, anaemia and defects in the endocrine system.

Some governments fear that proprietary software may include defects or malicious features which would compromise sensitive information.

However, possible adverse side effects include impaired memory and defects in visual perception.

A system that includes such defects is too unreliable for imposing the final, uncorrectable punishment, death.